*{
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html,body {
    height: 100%;
    color: #333;
}
button{
    border: none;
    outline: none;
}
li{
    list-style: none;
}
a{
    text-decoration: none;
    color: inherit;
}
.flex-row {
    display: flex;
    flex-direction: row;
}
.flex-wrap {
    flex-wrap: wrap;
}
.flex-column {
    display: flex;
    flex-direction: column;
}
.flex-x-center {
    justify-content: center;
}
.flex-y-start {
    align-items: flex-start;
}
.flex-y-center {
    align-items: center;
}
.flex-y-end {
    align-items: flex-end;
}
.flex-center {
    align-items: center;
    justify-content: center;
}
.flex-between {
    justify-content: space-between;
}
.flex-1 {
    flex: 1;
}
.flex-2 {
    flex: 2;
}
.text-center {
    text-align: center;
}
.text-ellipsis {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.text-ellipsis-2 {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
}
.text-ellipsis-3 {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
}